臺灣博碩士論文加值系統

　　高含量碳化矽鋁基複合材已逐漸在電子構裝應用上受到矚目，本研究將試著以粉末冶金的方法製作Al/40vol%SiC、Al/50vol%SiC及Al/60vol%SiC各種不同含量之Al/SiC複合材，製程上是使用熱壓加上超固相燒結，研究中會探討不同顆粒大小及熱壓時間對熱壓緻密度的影響，並發現不論是Al/40vol%SiC、Al/50vol%SiC或Al/60vol%SiC， SiC：Al之顆粒大小比(PSR)越大，對應的緻密度越高；由變異數分析可得知SiC顆粒大小為影響緻密度主要因素；在後續的超固相燒結也會發現，大致上，提高固相比及延長燒結時間會提高Al/SiC複合材的緻密度，對Al/SiC複合材機械性質會有所提升。

　　High content silicon carbide particle reinforced aluminum composites have generally fixed someone's eyes upon the application of electronic packaging. In this research, Al/high content SiC composites (Al/40vol%SiC, Al/50vol%SiC & Al/60vol%SiC) will be fabricated by P/M method. The Al/high content SiC composites are first hot pressing and then Supersolidus Liquid Phase Sintering (SLPS). The effects of particles size and HP time for density will be conferred in the research. The results show that, no matter what SiC content in Al/SiC composites is, the density increases with the particle size ratio (SiC : Al) increasing. From analysis of variables, we know that the major factor controlling the density of composites is particles size of SiC. At following SLPS, it can find increasing the liquid fraction and extending sintering time will enhancing the density and improve the mechanical properties.

摘要 I
Abstract II
總目錄 III
表目錄 V
圖目錄 VII
第一章 緒論 1
1-1 前言 1
1-2 實驗目的 4
1-3 文獻回顧 5
1-3-1 雙氣流氣體霧化法 5
1-3-2 粉體緻密化 7
1-3-3 熱壓機構 8
1-3-4 高含量碳化矽鋁基複合材之開發 10
1-3-5 超固相燒結 11
1-3-6 田口式實驗設計及變異數分析 14
1-3-7 破斷面微觀組織分析及機械性質計算 16
第二章 實驗步驟與方法 18
2-1實驗步驟 18
2-1-1 材料選擇 18
2-1-2 AA6063粉末之製備 18
2-1-3 AA6063粉末之過篩 19
2-1-4 混合粉末之配置 19
2-1-5 粉體之混合 20
2-1-6 粉體之成型 20
2-1-7 模具之設計 21
2-1-8 試片切割 22
2-1-9 試片鑲埋 22
2-1-10 金相研磨拋光方案 23
2-1-11 緻密度之量測 23
2-1-12 硬度測試 24
2-1-13 橫向壓裂強度(TRS)及韌性(Toughness)測試 24
2-2 實驗流程圖 26
2-3 實驗設備 27
第三章 結果與討論 29
3-1熱壓壓力及除氣參數之決定 29
3-2 純熱壓結果分析 31
3-2-1 熱壓之位移(Stroke)-時間(Time)曲線圖討論 32
3-2-2 緻密商數(QD)與SiC含量及PSR之關係 33
3-2-3 F型和A型曲線形成的原因與機制 35
3-3 變異數分析及最佳熱壓參數決定 37
3-4 超固相燒結機械性質分析 42
3-4-1 硬度(Hv)測試分析 42
3-4-2 韌性(Toghness)測試及橫向破裂強度(TRS)測試分析 44
3-4-3 最佳超固相燒結參數 46
3-4-4 破斷面微觀組織分析 47
第四章 結論 48
第五章 參考文獻 50
附錄A 硬度值(Hv)量測 108
附錄B 三點抗彎最大負荷量測(計算TRS用) 110
附錄C 韌性(Toughness)量測 112

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